Movable-blade mounting for clippers



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l.. J. WAHL KOVABLB .LADE MOUNTING FOR CLIPPERS Filed Feb. 20, 1925 3 Sheets-Sheet 2 April 27 1926. L. J. WAHL uovABLE BLADE y MOUNTING FOR cLIPRsRs 3 Sheets-Sheet 5 Filed Feb. 2o, 1925 Patent-.anpe 27, i926.'

UNITED S'- T.A.TE SA PATENT oFFlcs.

Lno J. WAHL, or STERLING, ILLINOIS.

`H'VABLEBLAD MOUNTING 'FOR CLIPPERS.

Application vled. February 20, 1925.' Serial No. 10.532.

T0 all' whom 'it maa] concern.

Be it known that "I, LEo J." WAILL, 'a

citizen of the United States,A residing at Sterling, in the county of Whiteside and State of Illinois, h'ave invented a certain new and useful improvement in Movable- Blade Mountin s for Clippers, of 'which the following is a ull, clear, concise, andl exact description, reference .being lhad to the'\ac companying drawings, forming a .part of this speclficatlon.

My nvention relates to a movable blade mounting for clippers and more particularwly to the connection between the vibratory member and the movable blade in an electric v clipper. f

'In a clipper having a stationary and a movable blade operated by a vibratory memv ber, the movable blade as it reciprocates tends to travel in a. slightly arcuate path. Also', due to the tension lbetween the blades,

the movable blade engages substantially flatly with the stationary blade. a slight tiltingaction of the blade-relative to the vibratory member.

It is a purpose of my invention to p ro-` "vide a connection between the vibratory low for the relative movement ofthe blade to Vthe vibratory member without. the emvployment of springs or other .resilient or flexible members lat the connection between 1tkltiefmovable blade and the vibrator'y' mem- It is a further purpose of the invention to provide a connection between the vibratory member and the movable blade comprising a socketmember and a cooperating rojection, said projection being held pre erably in engagement with 'the socket. due 4to 'the 'tension exerted between the blades.' The tensioning means is ordinarilypart of thev vibratorysystem and is exerted through the connection between the' movable blade and the vibratory member. y

It is a further purpose of the invention to provide a connection between thev vibratory member and the movable blade 'member comprising a co-operating .socket and jectlon having co-operating wall portlons soshaped that said projection engagesv the socketwith a wedging'action wherebyv the means for `ap ying tension between the blades hol the proj ectionv rmly with- This. causes in the socket for any position of the movable blade that 1t assumes' 1n its reciprocatmg movements.

Other objects and advantages of the 1n- Y vention will appear as the description of the accompanying .drawings proceeds. How# ever, I desire to have it distinctly understood I intend to include as part of my invention all sach obvious changes and modificationsv of parts .as would occur to a person skilled in this art' and as would fall within the scope of the claims.

In the drawings: Fig. 1 isa top plan View of 'a clipperembodying'one form of my improved blade.

mounting, the cover thereof. beingr removed; Fig. 2 1s an enlarged fragmentary section taken on the line 2-2 of Flg. 1;

Fig. 3 is a fragmentary top plan view of the movable blades'hown in Figa/1;

Fig.v 4 isl a sectiontaken on the line 4-1 of Fig. 2;

-F-ig. 51 is a view similar 'to Fig. 2 of a modified form of the invention;

Fig. 6 is a view similar to Fig. 3 ofa further modification;

,that I \do not intend to limit 4myself' to'the exact details shown or described, but that Fig. 7 is a similar view to Fig. 3 of sti-lli,-

lline 134-13 `of Fig. 12;

Fig.14 is a fragmentary top plan View of a clipper embodying the form of the invention at present preferred;

Fig. 15 is a section taken on line 15- 15 1of Fig.14; and

' Fig. 16 is a section taken on line 16--16 of Fig. 15, the stationaryv blade being omitted.

vReferrin in vdetail to the drawings,- my improved c ipper comprises a casing 10 upon `which is mounted the stationary blade 11 with which the movable blade 12 co-opx comprises a resilient member 16 which is secured to the casing 10 by means of the clamping member 17 and is further pro.`

vided with tuning springs 18 with which the adjusting screws 19 co-operate to tune the period of vibration of the vibratory member.

The vibratory member is further provided with a bracket 20 that is secured to the forward end of the armature 15 and which is provided with a head 21 having the beveled faces 22 and 2.3 so that said member 21 .tapers on .all sides fro1nthe' bracket toward the movable.blade 12. The beveled wall, portions 22 and 23 are beveled at a greater angle to the face of theblade than the beveled wall portions l24 and25 of the vsocket 26 provided in the movable blade 12.

A tension adjusting screw 27 is provided,

the head of which engages with the upper/ edge of the member 16 and it will be Levident that as the screw 27 is turned downwardly, the tension between the blades 11 and 12 is increased, While if it is moved upwardly,the tension will `be diminished. As the 'pressure of the spring 16 is being exerted through the head 21 on the blade 12, it is evident thatgthe lower edges of the beveled faces 22 and 23 will move along the faces 24 and 25 to seat the member 21 firmly in the socket 26. Due to the difference in the bevel of the faces on the member` y21v from the beveled walls 24 and 2)5,the

member 21 will engage firmly in the socket vin spite of any slight tilting of the blade .12 relative to the armature 15 as the blade reaches the oppositevr ends of its? reciproeating movement.

Obviously, instead of providing the socket on the blade 12, a projection can be provided thereon as shown in Fig. 5 :in which the bracket 20 is shown as being provided with a socket member 28 and the blade 12 is shown as being provided with a project-ion 29, said projection and said socket havingco-operating beveled portions as previously described,the walls of the member 28 being beveled at a. smaller angle to the face off the blade than the corresponding wallsof the projection 29. i

Itis also immaterial as to what is the shape of the co-operating projection and socket members as long as the recess and the projection are' of such relative shape as to prevent turning of the blade 12 relative to the vibratory'member and to the blade 11 and so that the beveled wall portions are provided to hold the projection firmly -in the socket and yet allow the movable'blade to have suicient tilting movement so that the blades engage with each other llatwise.-

is obtained by having these walls straight as shown in Fig. 9.

In Figs. 7 and 10 the blade 12 is shown as being provided witha triangular recess or socket 36 instead of a rectangular one withwhich a correspondingly shaped projection 37 co-operates. The walls 38 of the recess are beveled as shown in Figs. 7 and 10 and thewalls ,39 of the projectionare more sharply beveled as will be clear from Fig. 7.r ,l

InFigs. 11, 12 and 13 a connection between the movable blade and the vibratory member is shownrthat is particularly advantageous because of the three-point contact provided between the projection and the walls of the socket member. This allows the projection to adjust itself in the socket as the blade is tilted Arelative to the vibratory mem* ber in its reciprocating movement and yet causes the projection to be held firmly in the socket by the resilient action of the tensioning means between the blades. The stationary blade is indicated in said figures by the numeral 41 and the movable blade by the numeral 42/ Said movable blade is reciprocated by means of the vibratory member 43 which, corresponds to the member 15 in Fig. fand is provided withsimilarmeans for applying distance between the blades as is the member 15. A bracket 44 is secured to the vibratory member 43, said bracketv 44 being provided with beveled wall portions` 45, thusproviding a tapering projection at the end thereof which is adapted to enter the socket 46 in the movable blade 42. The socket 46` is formed in the plate 42 in any suitable manner as by punching and is made of a 'peculiar shape clearly shown in Fig. 13 to provide relatively narrow end portions 47 and a Wider central portion 48 for the socket with a curved Walled projection 49 opposite the wider portion 48. The edges 50 of the projection 44 engage with the end walls 51 of the recess or socket 46 and the tapering side walls 45 engage with the projection 49 and with the wall portions 52 to provide substantially a three-point engagement between the projection 44 and the walls of vthe socket 46.

It will ber seen that due to this arrangement, the beveled or tapered walls 45 o'f the member 44 will be engaging with the walls of the socketat the. points 49 and 52, no mat- 4' to the tilting of the blade 42 during the back openin and forth movements thereof, the tension exerted on the vibratory member 43 by the' resilient means for applying tension between` the blades41 and 42 always holding the beveled faces 45 inengagenient with said walls at 49 and 52.

In Figs. 14 to 16 inclusive; the form that appears to be the most practicable commercially at the present time is shown. In this arrangement no such great accuracy isre` quired in the construction of the parts as is true where the beveled walls are provided on both Vsocket and the projection and at the same time the projection is held as tirmly in engagement with the socket as in the other forms previously described.

Intlie form shown in Figs. 14 to 16 inclusive, the casing 53' is provided with :in electro-magnet liavinga coil 54, a core 55 and any armature 56 forming part ot a vibratory member similar to. the nieiiibei" 15. Said vibratory member is provided willi a forwardly extending bracket member 57 which fis provided with a downward-projection 5S having a curved edge 59. llie member 57 is preferably apunching and is ot' small thickness, as will be clear from Fig.

14. Mounted von the forward end ot the casing 53 is Athe stationary blade 60 with which the movable blade 6l cooperates. The movable blade 61 is provided with a recess or socket 62 that is preferably punched out of thel blade 61 with a suitable die`,said open ing or recess 62 being provided with a wider central portion 63 andV narrower ends 64',-

said ends being preferably rounded as indicated at 65. The projection 58 is of such a width'tliat the same engages with the walls .of the recess adjacent the curved ends 65 thereof. The socket or opening 62 being punched out of the blade 61 will have slightly curved edges 66,!tlicse being retained by avoiding grinding Vthe plate adjacent the It will be evident from the above, that in the form shown in Figs.`14 tov `16 inclusive, the projection 58 will extend into the socket such a distancethat the curved wall portion 59 will engage with the edge's othe'socket 62 adjacent the curved ends 65 and at the curved edves 66 thereof. This will permit a slight tilting of' the blade 61 relative to the member 57 both transversely and longitudinallyof the blade to allow for the necessary relativemovement between the vibratory member and the movable blade during the reciprocation thereof. However, due tothe] resilienc of the tensioning means between the .bla es 61 and 60 acting through the projection 58 against the walls of the socket 62, the curved wall portion 59 will always be held in firm engagement with the socket 62, thus preventing any rattle ofthe blade 61 due to movement thereof relative to the member 57. j 1 Having thus described my inventionfwhat `I desire to claim and secureby United States Letters latent is 1. In a clipper, a stationary blade, a inova` neetingsaid -movable blade and said vibra-u toijy member comprising a single socket and a' single projection entering Said Socket'aiid means forappl'yiiig tension between said blades, said means holding said projection in said socket, said projection and said socket heilig i'oriiie'd to permit said blade t0 tilt about. an axis substantially parallel to the length ot' said vibratory member.

3.' In a clipper, astationary blade, a movable blade, a vibratory menibeigymeans connecting said movable blade and said vibratory member comprising a socket and a projection entering said socket andl means for applying tension between said blades said means holding said projection in said .socket in wedging` engagement therewith,

but permitting said blade Vto tilt relative to saidvibratorv member.

4.' In a c ippcr, a `stationary blade, a movable blade, a vibratory member, means connecting said movable blade and said vibratory member comprising a socket and a projection Yentering said socket and resil' ient means for holding said projection in said socket, said projection engagin said socket at spaced points, to permit tilting of. aid blade relative to said vibratory mem- 5. In ,a clipper, a 'stationary blade, 4a movable blade, a vibratory member, means connecting said movablej blade and said vibratory member comprising a socket and a projection entering said socket and resilient means for holding said projection -in said socket, said'projection engaging s'a-id socket atspaced points, said points of engagement being out ot transverse alignment.

6. In a clipper, a stationary blade, a

-inovable blade, a vibratory member, means connecting said vmovable blade and said vibratory member comprising a socket and ent means for holding said projection in said soy its

va projection enteringsaid'socket and resiliiso socket, said projection engaging said socket at spaced points on one side thereof and between said points of engagement at the other side thereof.

7. In a clipper, a stationary blade, a movable blade, a vibrator-y member, means con-` necting said movable blade and said vibraengaging said socket at spaced points, to

permit tilting of said blade relative to said vibratory member.

8. 1n a clipper, a stationary blade, a movable blade, a. vibratory member, means connecting said movable blade and said vibratory member comprising a socket and a projection entering said socketand resilient means for holding said projection in said socket, .said projection being bevelled and engaging said socket at spaced points on .one side thereoit and between said points of engagement at the otherside thereof.

9. In a clipper, a stationary blade, a movable blade, a Vibratory member, means c'onnecting said movable blade and said vibratory member comprising a socket and a projef-.tion` entering said socket and resilient means 4l'or holding said projection in said` socket, said projection having a reduced end portion extending into said socket and engaging the'edge thereof lat vspaced points.

l0. ln a clipper, a stationary blade, a movable blade, a vibratory member, means connecting said movable blade and Said vibratory member comprising a socket and a projection entering said socket and resilient means for holding said projection in engagement with said socket, said projection having a' reduced end portion extending into said socket and engaging the edge thereof at spaced points, the major portion of the width of said socket being greater than the thickness of said projection.

l l. ln a clipper, a stationary blade, a movable blade, a vibratory member, means connecting said movable blade and said vibratory membeizcomprising a socket and a projection entering said socket and resilient means for holding said projection in said socket, saidprojection having a reduced end pori ion extending into said socket and having` a curved wall portion engaging the edge thereof.

.I n witness whereof, I hereunto subscribe my name this llth day of February, A. D. 1925. 

